1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff38b99d3633270363b27843b5448da84ce8375d8af9a6035f4e9a257d9cca5b. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1385a4e5-fb9e-4516-83ae-ee4c9fe44285.json and https://artists.proofprofile.net/proofs/artist/1385a4e5-fb9e-4516-83ae-ee4c9fe44285.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046d43c492e1ccc1ce7d3b2225965d3155cd869ccd06c7dd1c83766e0aeb9ae3. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ432373136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x746df385c365a523a90a07a16cdf0f039c69762cde8c63f13b4e08fbcc975b43. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616cad356bfccce4b2588cc4c5692371388ad48b9ca5776cab375b21e1258d64. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d2a6522e767650576e41affb6cc9e2da4a969d5b3f3b67466338f4b8350783. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2bf7f50a98af1d5f1a27c4ce6569a0651feedcc0bbc52cd87e7138115cf20a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30287d69f9b986295a360a64e41591c2fd6c2ddb14311e3d1e88fd23ab4decfa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2558801a5c5e815f27682ae768515190396699fedfe535b8e98593e9485df37. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159b0177e518f94d1381439195adb245216c1ab0bba6de1aaa9e109d4d51b57e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92288b6d987935b7c1100a4fe65feeb85aa693c43612e85d493d7dc93a207a6c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b0cb1c2e89566d1cb463be16d6828f5ebe9dcee6bd67a8253fbd06da66ce16. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX282521504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f55715bcba0db8f51eede3487f0b9277ab1fa3983a8576b12eb9b7ce95f6da. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:54:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX452535328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97b9d55a8b75b7e07a08d41f954f919fbb4a407c7375586716f29dcedd05063. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762570011.